Determining a health status for a user

A device, comprising:

• a memory configured to store instructions;
• a plurality of sensors configured to collect sensor data for a user;
• and
• a processor coupled to the memory, wherein the processor, in response to executing the instructions, is configured to initiate operations for evaluating health of the user including:
• tracking a plurality of vital signs of the user using the plurality of sensors, wherein the plurality of vital signs are determined from sensor data generated by the plurality of sensors;
• storing an equilibrium envelope for the user in the memory with the plurality of vital signs, wherein the equilibrium envelope includes a range for each of a plurality of vital signs for the user and historical metric data, wherein each range indicates homeostatic equilibrium for the user while at rest for one of the plurality of vital signs;
• detecting, in real-time, the user starting an activity based on the sensor data;
• in response to detecting the activity, detecting, based on the sensor data, an exit condition for a selected vital sign of the plurality of vital signs, wherein the exit condition is the selected vital sign exiting the range of the equilibrium envelope corresponding to the selected vital sign;
• determining an amount of time for the exit condition to occur measured from a start of the activity;
• and
• determining a health status for the user based upon the amount of time for the exit condition to occur for the selected vital sign compared to a historical amount of time for the exit condition to occur for the selected vital sign from the historical metric data of the equilibrium envelope.

A computer program product comprising a computer readable storage medium having program code stored thereon for evaluating health of a user, the program code executable by a processor to perform operations comprising:

• tracking a plurality of vital signs of the user using a plurality of sensors of a device, wherein the plurality of vital signs are determined from sensor data generated by the plurality of sensors;
• storing an equilibrium envelope for the user in a memory of the device with the plurality of vital signs, wherein the equilibrium envelope includes a range for each of a plurality of vital signs for the user and historical metric data, wherein each range indicates homeostatic equilibrium for the user while at rest for one of the plurality of vital signs;
• detecting, using a processor of the device in real-time, the user starting an activity based on the sensor data;
• in response to detecting the activity, detecting, based on the sensor data, an exit condition for a selected vital sign of the plurality of vital signs, wherein the exit condition is the selected vital sign exiting the range of the equilibrium envelope corresponding to the selected vital sign;
• determining an amount of time for the exit condition to occur measured from a start of the activity;
• and
• determining a health status for the user based upon the amount of time for the exit condition to occur for the selected vital sign compared to a historical amount of time for the exit condition to occur for the selected vital sign from the historical metric data of the equilibrium envelope.